GB663017A - Improvements in flame-proof electric switchgear boxes - Google Patents

Improvements in flame-proof electric switchgear boxes

Info

Publication number
GB663017A
GB663017A GB2819149A GB2819149A GB663017A GB 663017 A GB663017 A GB 663017A GB 2819149 A GB2819149 A GB 2819149A GB 2819149 A GB2819149 A GB 2819149A GB 663017 A GB663017 A GB 663017A
Authority
GB
United Kingdom
Prior art keywords
door
bolts
flame
proof electric
anderson
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2819149A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anderson Boyes and Co Ltd
Original Assignee
Anderson Boyes and Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE493339D priority Critical patent/BE493339A/xx
Priority to GB1086047A priority patent/GB623161A/en
Application filed by Anderson Boyes and Co Ltd filed Critical Anderson Boyes and Co Ltd
Priority to GB2819149A priority patent/GB663017A/en
Publication of GB663017A publication Critical patent/GB663017A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042—Explosion-proof cases

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Patch Boards (AREA)

Abstract

663,017. Switch cases. ANDERSON, A., and ANDERSON, BOYES & CO., Ltd. Dec. 25, 1949. [Nov. 3, 1949] No. 28191/49. Class 38 (v). [Also in Group XXV] The invention of the parent Specification is modified by the addition of an interlock which prevents the door-locking bolts 13 from being shot when the door is open, with the attendant risk to the seal by slamming the door before unshooting the bolts. When the door is closed, a spring-urged detent 18 engages a fixed stop 20 and is slid inwards so that a notch 22 therein straddles one of the bolts 13, which are thus free to move. When the door is open, the pin is displaced by its spring 19 so that the end 23 of the notch 22 enters a recess 24 in the bolt, which is thus locked.
GB2819149A 1949-11-03 1949-11-03 Improvements in flame-proof electric switchgear boxes Expired GB663017A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE493339D BE493339A (en) 1949-11-03
GB1086047A GB623161A (en) 1949-11-03 1947-04-23 Improvements in flame-proof electric switchgear boxes
GB2819149A GB663017A (en) 1949-11-03 1949-11-03 Improvements in flame-proof electric switchgear boxes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2819149A GB663017A (en) 1949-11-03 1949-11-03 Improvements in flame-proof electric switchgear boxes

Publications (1)

Publication Number Publication Date
GB663017A true GB663017A (en) 1951-12-12

Family

ID=10271728

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1086047A Expired GB623161A (en) 1949-11-03 1947-04-23 Improvements in flame-proof electric switchgear boxes
GB2819149A Expired GB663017A (en) 1949-11-03 1949-11-03 Improvements in flame-proof electric switchgear boxes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1086047A Expired GB623161A (en) 1949-11-03 1947-04-23 Improvements in flame-proof electric switchgear boxes

Country Status (2)

Country Link
BE (1) BE493339A (en)
GB (2) GB623161A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149785B (en) * 1959-03-18 1963-06-06 Siemens Ag Switch and cover locking, especially for a pressure-resistant, firedamp and explosion-proof housing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200897B (en) * 1987-02-05 1990-02-28 Metal Box Plc Plug with locking member
AU630264B2 (en) * 1990-01-24 1992-10-22 Lenlok Hales Pty. Ltd. Improved self lock mechanism
US5375894A (en) * 1992-10-08 1994-12-27 Southco, Inc. Slide lock fastener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149785B (en) * 1959-03-18 1963-06-06 Siemens Ag Switch and cover locking, especially for a pressure-resistant, firedamp and explosion-proof housing

Also Published As

Publication number Publication date
BE493339A (en)
GB623161A (en) 1949-05-12

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